No codes present. Mechanic thinks it's differential (guessing front). Guesses a tooth broke during the turn. Putting into reverse "dropped" the tooth. Predicts we'll find metal if we drain the differential.

Ironically, I was planning on changing differential fluid next weekend (never been done in the 133,000 miles that I know about), having just changed engine oil and transfer case oil.

I don't know if I can continue to drive it or should get the repair started immediately. Any thoughts?

Does this diagnosis sound feasible to you?

Thanks.

Update: Drained all the differential fluids...NO metal found from front diff...very small amount of metal found by dragging a very strong magnet through the oil from the rear diff. (you need a magnifying glass to see them on the magnet). Next plan of action is to get the ML on the lift at an indy and attempt to "inspect" the gear teeth through the fill and/or drain plug(s). Does anyone know if there is a magnet inside the diff (like the transmission pan) to "catch" metal particles?

__________________
Jim